Why Does My Hearing Aid Crackle and How to Fix It?

Written by the Nano Hearing Aids Team
Reviewed for Accuracy by Lindsay Roberts, AuD.

Lindsay Roberts
Why Does My Hearing Aid Crackle and How to Fix It?

Key Takeaways

  • Common causes of hearing aid crackling include battery issues, moisture and dirt build-up, defective components, and improper fit.
  • Regular cleaning and drying of hearing aids can prevent crackling sounds.
  • Replacing batteries and ensuring they are correctly fitted can resolve many crackling issues.
  • Proper fit and adjustment of hearing aids are crucial to avoid feedback loops that cause crackling.
  • Nano offers 24/7 support to help diagnose and fix persistent crackling problems of its over-the-counter (OTC) hearing aids.

NANO Hearing Aids are FDA-registered, Class I devices. Our OTC hearing aids are designed for individuals over 18 years of age with perceived mild to moderate hearing impairment. With prices starting at just $297, they offer a viable solution for those looking to improve their hearing without breaking the bank.

Shop NANO OTC Hearing Aids


Ways to Fix Hearing Aid Crackle 

Understanding the Issue: Common Hearing Aid Problems

Hearing aids, like any electronic device, can malfunction. A common issue is a crackling sound, which can be intermittent or constant and significantly affect clarity. 

Causes of Hearing Aid Crackling

Several factors can cause your hearing aid to produce a crackling sound:

Battery Issues

Batteries, when they are low or not properly fitted, may produce a crackling sound. It is important to ensure that the batteries are not completely drained and are correctly installed.

Moisture and Dirt Build-Up

Moisture and dirt are common culprits behind many hearing aid problems, including crackling sounds. Sweat, rain, or humidity can seep into the device, causing disruptions. Similarly, dirt and earwax can block the microphones and speakers, leading to a crackling noise.

Defective Components

Sometimes, the issue lies within the hearing aid itself. A defective microphone, speaker, or other internal component can cause crackling sounds—professional repair or replacement may be necessary.

Improper Fit and Feedback Loop

A proper fit is necessary for optimal performance. If the hearing aid doesn't fit well, it can create a feedback loop, resulting in a crackling or whistling sound. Ensuring your hearing aid is correctly fitted can help eliminate this issue.

Solutions to Fix Hearing Aid Crackling

Addressing hearing aid crackling involves several practical steps to identify and fix the root cause.

Checking and Replacing Batteries

  • Remove the battery and inspect for corrosion or damage.
  • Replace the old battery with a fresh one, ensuring correct positioning.
  • Turn on the hearing aid and listen for crackling. If it persists, try another fresh battery.

Cleaning and Drying the Hearing Aid

  • Use a soft, dry cloth to wipe down the exterior.
  • Use a small brush or specialized cleaning tool to remove dirt or earwax from microphones and speakers.
  • If exposed to moisture, use a hearing aid dehumidifier overnight.

Inspecting for Defective Parts

  • Examine the hearing aid for visible signs of damage, such as cracks or loose parts.
  • Check the microphone and speaker for blockages or damage.
  • Contact your hearing aid provider or audiologist if you suspect a defective component.

Ensuring Proper Fit and Adjustment

  • Ensure the hearing aid is correctly positioned in your ear, fitting snugly without discomfort.
  • Adjust the volume to a comfortable level, avoiding settings that are too high.
  • Consult with your audiologist for custom fit or adjustments if persistent fit issues occur.
Older man adjusting his hearing aid, emphasizing the importance of regular maintenance to prevent crackling sounds.
Earwax buildup or debris can obstruct the sound channels, leading to crackling sounds.

Preventive Measures to Avoid Crackling

Preventive measures can help avoid future problems with your hearing aid.

Regular Cleaning

  • Clean your hearing aid regularly to prevent dirt and earwax build-up.
  • Use a soft, dry cloth and a small brush to clean the exterior, microphones, and speakers.
  • Avoid using water or cleaning agents.

Proper Storage

  • Store your hearing aid in a protective case when not in use.
  • Keep it in a dry, cool place, avoiding extreme temperatures or humidity.

Scheduled Maintenance and Check-Ups

  • Schedule regular appointments with your audiologist for professional cleaning and inspection.
  • Regular maintenance can help identify and address potential issues before they become significant problems.

Additional Tips for Enhancing Hearing Aid Performance

To get the best performance out of your hearing aid, consider the following additional tips:

Use of Hearing Aid Dehumidifiers

  • Moisture can damage hearing aids. Use a dehumidifier to keep your device dry.
  • Place your hearing aid in the dehumidifier overnight to remove accumulated moisture.

Consulting with a Professional

If your hearing aid continues to crackle despite troubleshooting, seek expert help. Audiologists and hearing aid specialists can diagnose and fix issues that you might not be able to address at home. Regular check-ups with a professional can prevent future issues and ensure optimal performance.

How Nano Hearing Aids Can Help

Nano Hearing aids in a black charging case, helping to maintain functionality and prevent crackling sounds.
The Nano First Ear Pro CIC

At Nano, we understand the importance of clear and reliable hearing. That’s why we ensure our OTC hearing aids provide high-quality sound and minimize issues like crackling. As FDA-registered, Class I medical devices, our hearing aids are safe and effective for everyday use.


One of our offerings is the Nano First Ear Pro CIC, which features settings for volume adjustment, noise reduction, and sound frequency fine-tuning, allowing you to customize your hearing experience. Its user-friendly design makes it easy to manage and maintain.

If you experience crackling sounds, our 24/7 customer service is available to help you troubleshoot your device. Our team is dedicated to ensuring your hearing needs are met effectively.

Frequently Asked Questions (FAQ)

What can I do if my hearing aid is still under warranty?

If your hearing aid is under warranty and you experience persistent crackling, contact your provider. Most warranties cover repairs and replacements for defective components. 

Can crackling harm my hearing?

While crackling sounds from a hearing aid are generally not harmful, they can be very annoying and disrupt your ability to hear clearly. Address the issue promptly to avoid prolonged discomfort and ensure effective hearing.

How often should I clean my hearing aid?

Clean your hearing aid daily to remove dirt, earwax, or moisture. Use a soft, dry cloth and specialized cleaning tools to ensure all components are free from blockages. 

Will weather conditions affect my hearing aid?

Yes, weather conditions can impact your hearing aid. Moisture from rain, humidity, or sweat can seep into the device and disrupt the sound signal. Extreme temperatures can also affect performance. 

Are there any specific products that can help maintain my hearing aid?

Nano provides guidance on maintaining our devices in top condition. For issues like crackling, our 24/7 customer support can assist you with troubleshooting and maintenance tips to ensure your Nano models function optimally.

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